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https://www.readbyqxmd.com/read/28645094/quality-assessment-of-shoulder-plyometric-exercises-examining-the-relationship-to-scapular-muscle-activity
#1
Maya Calé-Benzoor, Annelies Maenhout, Michal Arnon, Gershon Tenenbaum, Mia Werrin, Ann Cools
OBJECTIVES: The purpose of the study was to evaluate performance quality of shoulder plyometric exercises, and examine the relationship to scapular muscle activation during an intense exercise bout. DESIGN: Observational study. SETTING: University laboratory. PARTICIPANTS: 32 healthy university students (male/female: 14/18) volunteers. MAIN OUTCOME MEASURES: Subjects performed 10 plyometric exercises...
May 12, 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28630574/unilateral-rolling-of-the-foot-did-not-affect-non-local-range-of-motion-or-balance
#2
Lena Grabow, James D Young, Jeannette M Byrne, Urs Granacher, David G Behm
Non-local or crossover (contralateral and non-stretched muscles) increases in range-of-motion (ROM) and balance have been reported following rolling of quadriceps, hamstrings and plantar flexors. Since there is limited information regarding plantar sole (foot) rolling effects, the objectives of this study were to determine if unilateral foot rolling would affect ipsilateral and contralateral measures of ROM and balance in young healthy adults. A randomized within-subject design was used to examine non-local effects of unilateral foot rolling on ipsilateral and contralateral limb ankle dorsiflexion ROM and a modified sit-and-reach-test (SRT)...
June 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28628078/nociceptor-interleukin-10-receptor-1-is-critical-for-muscle-analgesia-induced-by-repeated-bouts-of-eccentric-exercise-in-the-rat
#3
Pedro Alvarez, Oliver Bogen, Paul G Green, Jon D Levine
Delayed-onset muscle soreness is typically observed after strenuous or unaccustomed eccentric exercise. Soon after recovery, blunted muscle soreness is observed on repeated eccentric exercise, a phenomenon known as repeated bout effect (RBE). Although regular physical activity decreases muscle hyperalgesia, likely because of increased production of the anti-inflammatory cytokine interleukin-10 (IL-10) in the skeletal muscle, whether IL-10 also contributes to the antinociceptive effect of RBE is unknown. Furthermore, whether IL-10 attenuates muscle hyperalgesia by acting on muscle nociceptors remains to be established...
April 26, 2017: Pain
https://www.readbyqxmd.com/read/28609641/flexibility-training-and-the-repeated-bout-effect-priming-interventions-prior-to-eccentric-training-of-the-knee-flexors
#4
Andrew W Leslie, Joel L Lanovaz, Justin W Andrushko, Jonathan P Farthing
Both the repeated bout effect and increased flexibility have been linked to reduced muscle damage, fatigue and strength loss after intense eccentric exercise. Our purpose was to compare the eccentric training (ECC) response after first priming the muscles with either static flexibility training or a single intense bout of eccentric exercise. Twenty-five participants were randomly assigned to flexibility training (F;n=8; 3x/week; 30 min/day), a single-bout of intense eccentric exercise (SB;n=9), or no intervention (control [C];n=8) during a 4-week priming phase, prior to completing a subsequent 4-week period of eccentric training of the knee flexors...
June 13, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28594657/fitness-moderates-glycemic-responses-to-sitting-and-light-activity-breaks
#5
Matthew McCarthy, Charlotte L Edwardson, Melanie J Davies, Joseph Henson, Danielle H Bodicoat, Kamlesh Khunti, David W Dunstan, James A King, Thomas Yates
PURPOSE: This study aimed to experimentally determine whether cardio-respiratory fitness (CRF) modifies postprandial glycemia during prolonged sitting and investigated the potentially blunting influence this may have upon the benefits of interrupting postprandial sitting time with light activity breaks. METHODS: Thirty-four adults (18female; 16male; mean ± SD age: 40 ± 9years, BMI: 24.5 ± 3kg/m) undertook two 7·5hour experimental conditions in a randomized order: 1) Prolonged sitting; 2) Sitting interspersed with 5min light walking bouts every 30min...
June 8, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28580400/replacement-of-daily-load-attenuates-but-does-not-prevent-changes-to-the-musculoskeletal-system-during-bed-rest
#6
Peter R Cavanagh, Andrea J Rice, Sara C Novotny, Kerim O Genc, Ricki K Englehaupt, Tammy M Owings, Bryan Comstock, Tamre Cardoso, Hakan Ilaslan, Scott M Smith, Angelo A Licata
The dose-response effects of exercise in reduced gravity on musculoskeletal health have not been well documented. It is not known whether or not individualized exercise prescriptions can be effective in preventing the substantial loss in bone mineral density and muscle function that have been observed in space flight and in bed rest. In this study, typical daily loads to the lower extremities were quantified in free-living subjects who were then randomly assigned to control or exercise groups. Subjects were confined to 6-degree head-down bed rest for 84 days...
December 2016: Bone Reports
https://www.readbyqxmd.com/read/28557852/analysis-of-high-intensity-skating-in-top-class-ice-hockey-match-play-in-relation-to-training-status-and-muscle-damage
#7
Erik Lignell, Dan Fransson, Peter Krustrup, Magni Mohr
We examined high-intensity activities in a top-class ice-hockey game and the effect of training status. Male ice-hockey players (n=36) from the NHL participated. Match-analysis was performed during a game and physical capacity was assessed by a submaximal Yo-Yo Intermittent Recovery Ice-hockey test, level 1 (YYIR1-IHSUB). Venous blood samples were collected 24-h post-game to determine markers of muscle damage. Players performed 119±8 and 31±3 m·min of high-intensity and sprint-skating, respectively, during a game...
May 23, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28553994/the-repeated-bout-effect-of-traditional-resistance-exercises-on-running-performance-across-three-bouts
#8
Kenji Doma, Moritz Schumann, Anthony S Leicht, Brian Edward Heilbronn, Felipe Damas, Dean Burt
Purpose This study investigated the repeated bout effect of three typical lower-body resistance training (RT) sessions on maximal and sub-maximal effort running performance. Methods Twelve resistance-untrained men (age 24±4 years; height 1.81±0.10 m; body mass 79.3±10.9 kg; VO2peak 48.2±6.5 mL∙kg-1∙min-1; six-repetition maximum squat 71.7±12.2kg) undertook three bouts of RT sessions at six-repetition maximum. Counter-movement-jump (CMJ), lower-body ROM, muscle soreness and creatine kinase (CK) were examined prior to (T0), immediately-post (T1), 24 (T24) and 48 (T48) h post each RT bout...
May 29, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28543734/the-effect-of-repeated-periods-of-speed-endurance-training-on-performance-running-economy-and-muscle-adaptations-113-120-characters
#9
Casper Skovgaard, Nicki Winfield Almquist, Jens Bangsbo
The effect of repeated intense training interventions was investigated in eight trained male runners (maximum oxygen uptake (VO2 -max): 59.3±3.2 ml·kg(-1) ·min(-1) , mean±SD) who performed ten speed endurance training (SET; repeated 30-s 'all-out' bouts) and ten aerobic moderate-intensity training sessions during two 40-day periods (P1 and P2) separated by ~80 days of habitual training. Before and after both P1 and P2, subjects completed an incremental test to exhaustion to determine VO2 -max and a repeated running test at 90% vVO2 -max to exhaustion (RRT) to determine short-term endurance capacity...
May 19, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28542490/repeated-bouts-of-exhaustive-exercise-increase-circulating-cell-free-nuclear-and-mitochondrial-dna-without-development-of-tolerance-in-healthy-men
#10
Robert Stawski, Konrad Walczak, Piotr Kosielski, Pawel Meissner, Tomasz Budlewski, Gianluca Padula, Dariusz Nowak
OBJECTIVE: Acute single strenuous exercise increases circulating cell free DNA (cf DNA). We tested whether three repeated bouts of exhaustive exercise induced the cf DNA response without development of tolerance in healthy men. METHODS: Eleven average-trained men (age 34.0±5.2 years, body mass index 26.2±3.1 kg/m2, maximal oxygen consumption-VO2max 49.6±4.5 ml/kg*min) performed three treadmill exercise tests to exhaustion at speed corresponding to 70% VO2max separated by 72 hours of resting...
2017: PloS One
https://www.readbyqxmd.com/read/28538761/effects-of-continuous-and-accumulated-exercise-on-endothelial-function-in-rat-aorta
#11
Juliana Edwiges Martinez, Elane de Fátima Taipeiro, Agnaldo Bruno Chies
Background: The practice of exercise in short bouts repeated throughout the day may be an alternative strategy to lift people out of physical inactivity. Objective: to evaluate if accumulated exercise, as occurs in continuous exercise training, improve endothelial function in rat aorta. Methods: Wistar male rats were divided into three groups: continuous exercise (CEx, 1 hour on the treadmill) or accumulated exercise (AEx, 4 bouts of 15 minutes / day) for 5 days/week for 8 weeks, or sedentary (SED)...
April 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28538318/do-fencers-require-a-weapon-specific-approach-to-strength-and-conditioning-training
#12
Anthony N Turner, Chris J Bishop, Jon A Cree, Michael L Edwards, Shyam Chavda, Paul J Read, David M J Kirby
Turner, AN, Bishop, CJ, Cree, JA, Edwards, ML, Chavda, S, Read, PJ, and Kirby, DMJ. Do fencers require a weapon-specific approach to strength and conditioning training? J Strength Cond Res 31(6): 1662-1668, 2017-There are 3 types of weapons used in Olympic fencing: the épée, foil, and sabre. The aim of this study was to determine if fencers exhibited different physical characteristics across weapons. Seventy-nine male (n = 46) and female (n = 33) national standard fencers took part in this study. Fencers from each weapon (male and female), i...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28530078/-athlete-s-heart-the-more-the-merrier
#13
REVIEW
Reut Shavit, Michael Glikson, Naama Constantini
Regular moderate exercise training is effective for the prevention and treatment of many common chronic diseases and improves cardiovascular health and life expectancy. However, long-term excessive endurance exercise may induce pathological structural remodeling of the heart. The athlete's heart is characterized by enlargement of cardiac chambers and eccentric hypertrophy with preserved myocardial function as normal physiological adaptations for prolonged and intense endurance physical stress. However, recent studies have demonstrated transient right ventricular dysfunction and elevation of cardiac biomarkers following intense endurance exercise...
September 2016: Harefuah
https://www.readbyqxmd.com/read/28527012/effect-of-voluntary-hypocapnic-hyperventilation-or-moderate-hypoxia-on-metabolic-and-heart-rate-responses-during-high-intensity-intermittent-exercise
#14
Kohei Dobashi, Naoto Fujii, Kazuhito Watanabe, Bun Tsuji, Yosuke Sasaki, Tomomi Fujimoto, Satoru Tanigawa, Takeshi Nishiyasu
PURPOSE: To investigate the effect of voluntary hypocapnic hyperventilation or moderate hypoxia on metabolic and heart rate responses during high-intensity intermittent exercise. METHODS: Ten males performed three 30-s bouts of high-intensity cycling [Ex1 and Ex2: constant-workload at 80% of the power output in the Wingate anaerobic test (WAnT), Ex3: WAnT] interspaced with 4-min recovery periods under normoxic (Control), hypocapnic or hypoxic (2500 m) conditions...
May 19, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28520774/affective-responses-in-mountain-hiking-a-randomized-crossover-trial-focusing-on-differences-between-indoor-and-outdoor-activity
#15
Martin Niedermeier, Jürgen Einwanger, Arnulf Hartl, Martin Kopp
INTRODUCTION: Affective responses during physical activity (PA) are important for engagement in PA programs and for adherence to a physically active lifestyle. Little is known about the affective responses to PA bouts lasting longer than 45 minutes. Therefore, the aims of the present study were to analyse acute effects on affective responses of a three-hour outdoor PA intervention (mountain hiking) compared to a sedentary control situation and to an indoor treadmill condition. METHODS: Using a randomized crossover design, 42 healthy participants were randomly exposed to three different conditions: outdoor mountain hiking, indoor treadmill walking, and sedentary control situation (approximately three hours each)...
2017: PloS One
https://www.readbyqxmd.com/read/28507168/nutritional-interventions-and-the-il-6-response-to-exercise
#16
REVIEW
Stephen R Hennigar, James P McClung, Stefan M Pasiakos
IL-6 is a pleiotropic cytokine with a wide range of biologic effects. In response to prolonged exercise, IL-6 is synthesized by contracting skeletal muscle and released into circulation. Circulating IL-6 is thought to maintain energy status during exercise by acting as an energy sensor for contracting muscle and stimulating glucose production. If tissue damage occurs, immune cells infiltrate and secrete cytokines, including IL-6, to repair skeletal muscle damage. With adequate rest and nutrition, the IL-6 response to exercise is attenuated as skeletal muscle adapts to training...
May 15, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28501805/neurological-tests-improve-after-olympic-style-boxing-bouts-a-pretournament-and-post-tournament-study-in-the-2016-women-s-world-boxing-championships
#17
David R Howell, William P Meehan, Michael P Loosemore, Joseph Cummiskey, Jean-Paul Grabner von Rosenberg, David McDonagh
AIM: To prospectively examine the neurocognitive, postural, dual-task and visual abilities of female Olympic-style boxers before and after participation in a tournament. METHODS: Sixty-one females completed the modified Balance Error Scoring System (mBESS), King-Devick test and 3 m timed-up-and-go test in single-task and dual-task conditions. A subset (n=31) completed the CogState computerised neurocognitive test. Initial testing was completed prior to the 2016 Women's World Boxing Championships; each participant repeated the testing protocol within a day of elimination...
May 13, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28496525/il-10-and-il-10-receptor-mutations-in-very-early-onset-inflammatory-bowel-disease
#18
REVIEW
Lei Zhu, Tingting Shi, Chengdi Zhong, Yingde Wang, Michael Chang, Xiuli Liu
Very early onset inflammatory bowel disease (VEO-IBD) is a unique disease entity with a complex genetic susceptibility in affected patients. Next-generation gene sequencing techniques have revealed various monogenetic mutations contributing to the pathogenesis of VEO-IBD, including interleukin 10 (IL-10) and IL-10 receptor (IL-10R) mutations. In this article, we reviewed the features of and effective therapeutic options for VEO-IBD with IL-10 and/or IL-10R mutations. The IL-10 signal pathway inhibits the release of several key cytokines and thereby has a significant anti-inflammatory effect in the gastrointestinal tract...
April 2017: Gastroenterology Research
https://www.readbyqxmd.com/read/28479394/ampk-contributes-to-aerobic-exercise-induced-antinociception-downstream-of-endocannabinoids
#19
Tanya S King-Himmelreich, Christine V Möser, Miriam C Wolters, Julia Schmetzer, Yannik Schreiber, Nerea Ferreirós, Otto Q Russe, Gerd Geisslinger, Ellen Niederberger
Physical exercise has been repeatedly associated with decreased nociceptive responses but the underlying mechanisms have still not been fully clarified. In this study, we investigated exercise-induced effects after a single bout of treadmill running on the mouse model of formalin-induced inflammatory nociception. As potential molecular mediators, we focused on endogenous endocannabinoids as well as AMP-activated protein kinase (AMPK). Our results showed that wild type mice display a reduced nociceptive response in the formalin test after treadmill running, while exercise had no effect on inflammatory nociception in AMPKα2 knockout mice...
May 4, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28473645/dopamine-receptors-differentially-control-binge-alcohol-drinking-mediated-synaptic-plasticity-of-the-core-nucleus-accumbens-direct-and-indirect-pathways
#20
Xincai Ji, Sucharita Saha, Jenya Kolpakova, Melissa Guildford, Andrew R Tapper, Gilles E Martin
Binge alcohol drinking, a behavior characterized by rapid repeated alcohol intake, is most prevalent in young adults and is a risk factor for excessive alcohol consumption and alcohol dependence. Although the alteration of synaptic plasticity is thought to contribute to this behavior, there is currently little evidence that this is the case. We used drinking in the dark (DID) as a model of binge alcohol drinking to assess its effects on spike timing-dependent plasticity (STDP) in medium spiny neurons (MSNs) of the core nucleus accumbens (NAc) by combining patch-clamp recordings with calcium imaging and optogenetics...
May 31, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
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